diff --git a/CHANGELOG.md b/CHANGELOG.md
index 006c931ae0a..4cbb7155aac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,12 @@
 Change Log
 ==========
 
+## Version 0.4.0
+
+_2020-08-21_
+
+ * Support Kotlin 1.4.0.
+ 
 ## Version 0.3.1
 
 _2020-05-25_
diff --git a/README.md b/README.md
index a628620deee..1fd1801a85b 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ Builds of the Gradle plugin are available through the
 ```kotlin
 plugins {
   kotlin("jvm") version "1.3.70"
-  id("com.bnorm.power.kotlin-power-assert") version "0.3.0"
+  id("com.bnorm.power.kotlin-power-assert") version "0.4.0"
 }
 ```
 
diff --git a/build.gradle.kts b/build.gradle.kts
index 8254a96dbc6..e55c8994c59 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -6,7 +6,7 @@ plugins {
 
 allprojects {
   group = "com.bnorm.power"
-  version = "0.4.0-SNAPSHOT"
+  version = "0.4.0"
 }
 
 subprojects {
diff --git a/kotlin-power-assert-gradle/src/main/kotlin/com/bnorm/power/PowerAssertGradlePlugin.kt b/kotlin-power-assert-gradle/src/main/kotlin/com/bnorm/power/PowerAssertGradlePlugin.kt
index be3591f667c..81cf3d2b715 100644
--- a/kotlin-power-assert-gradle/src/main/kotlin/com/bnorm/power/PowerAssertGradlePlugin.kt
+++ b/kotlin-power-assert-gradle/src/main/kotlin/com/bnorm/power/PowerAssertGradlePlugin.kt
@@ -35,7 +35,7 @@ class PowerAssertGradlePlugin : KotlinCompilerPluginSupportPlugin {
   override fun getPluginArtifact(): SubpluginArtifact = SubpluginArtifact(
     groupId = "com.bnorm.power",
     artifactId = "kotlin-power-assert",
-    version = "0.4.0-SNAPSHOT"
+    version = "0.4.0"
   )
 
   override fun applyToCompilation(
diff --git a/sample/build.gradle.kts b/sample/build.gradle.kts
index c7fa53aca58..3f6f11980a8 100644
--- a/sample/build.gradle.kts
+++ b/sample/build.gradle.kts
@@ -1,6 +1,6 @@
 buildscript {
   dependencies {
-    classpath("gradle.plugin.com.bnorm.power:kotlin-power-assert-gradle:0.3.0")
+    classpath("gradle.plugin.com.bnorm.power:kotlin-power-assert-gradle:0.4.0")
   }
 }